 Need opinions on which heads to use on /6 2.7 build |
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| tornik550 |
 Sep 15 2015, 05:25 PM
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#1
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Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
I am building a /6 2.7l with JE 9.5:1 Pistons. I am using E cams and I have 1.5" MSDS headers. Here are the tow head options that I have. Car is for street fun, no racing. In formulating your opinion please consider a nice balance of cost/ performance. I am not necessarily looking for the heads with the best performance. For example if there is a huge cost difference however only a slight performance gain- obviously go with the cheaper...
Which would you use- Option 1- 2.2E heads completely rebuilt and ready to go. The intake ports were ported from 32mm to 35mm. The exhaust is the stock 32mm however it was "cleaned up" using a flow bench which did improve numbers however I do not know how it is compared to a stock 2.7l head. I do not have a way of getting the flow numbers now. These obviously would be free since I own them and all the work has been done. Option 2- 2.7l heads that need completely rebuilt. not sure how much it costs to completely rebuild them however I would guess around $1000. The only potential benefit with these heads are that the exhaust ports are stock 35mm vs "cleaned up" 32mm. I have spent sooooooo much money on this engine and I don't want to spend much more unless it would be worth the extra money. |
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| TravisNeff |
Sep 15 2015, 05:31 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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the 2.7 heads would be 35mm only if they are for the S model.
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| tornik550 |
Sep 15 2015, 05:38 PM
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#3
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
QUOTE(Travis Neff @ Sep 15 2015, 07:31 PM)  the 2.7 heads would be 35mm only if they are for the S model. Yes mine are 2.7 S heads |
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| johnhora |
Sep 15 2015, 08:19 PM
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#4
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Senior Member Group: Members Posts: 866 Joined: 7-January 03 From: Derby City KY Member No.: 107 Region Association: None
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How about selling the 2.2E heads to finance the 2.7S heads rebuild.....
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| rick 918-S |
Sep 15 2015, 08:29 PM
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#5
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Hey nice rack! -Celette Group: Members Posts: 20,443 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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Here's an option the 2.7 and 2.7S heads unless your having the injection ports welded.
http://www.914world.com/bbs2/index.php?showtopic=263516 |
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| porschetub |
Sep 15 2015, 11:40 PM
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#6
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Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
You are running carbs,right?,the 2.2S heads will give you nice power /torque down lower in the rev range, you won't run out of puff until you get way up in the rev's which you don't use much anyway.
IMO you will be fine with these heads....that you already have, others may disagree. |
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| TVRLOTUSTR3 |
Sep 16 2015, 04:39 AM
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#7
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Newbie Group: Members Posts: 24 Joined: 11-October 06 From: Shenandoah Valley Member No.: 7,024 |
E cams like small ports, Solex and S cams like big ports.
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